Journal
CERAMICS INTERNATIONAL
Volume 44, Issue 10, Pages 11730-11736Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2018.03.251
Keywords
Si3N4; Bioscaffold; Inverse replication; 3-D printing; Vacuum suction filtration
Categories
Funding
- National Natural Science Foundation of China [51479172]
- Natural Science Foundation of Shandong Province [ZR2016JL020, ZR2016EL02, ZR2017BB081, ZR2016EEB02]
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This paper focuses on investigating the technical potential for fabricating porous ceramic bioscaffolds for the repair of osseous defects from trauma or disease by inverse replication of three-dimensional (3-D) printed polymer template. Si3N4 ceramics with pore structure comprising orderly-interconnected big pore channels and well-distributed small pores are successfully fabricated by a technique combining 3-D printing, vacuum suction filtration and oxidation sintering.The Si3N4 ceramics fabricated from the Si3N4 powder with addition of 10 wt% talcum by sintering at 1250 degrees C for 2 h have little deformation, uniform microstructure, low linear shrinkage of 4 1%, high open porosity of 58 2%, relatively high compression strength of 6.4 MPa, orderly-interconnected big pore channels and well-distributed small pores, which are promising bioscaffold in the field of bone tissue engineering.
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